The Cyber Insurance Crisis for Industrial Organizations
Industrial organizations face a cyber insurance market that is simultaneously more necessary and more punishing than at any point in the last decade.
The numbers define the crisis. S&P Global Ratings projects annual cyber insurance premiums will reach $23 billion by 2026, with a 15–20% premium increase following two years of declining rates. The drivers: a 126% increase in ransomware incidents in Q1 2025, an 800% surge in infostealer-driven credential theft, and successful attacks that are 17% more costly per incident than in 2024. The global cyber insurance market is now valued at over $26 billion – nearly triple what it was five years ago.
For industrial organizations specifically, the picture is worse. Industrial organizations currently have insurance coverage for only 25–30% of their total OT cyber risk exposure. The average “protection gap” – the difference between potential losses and available insurance coverage – ranges from 67% to 89% across different industrial sectors. Dragos tracked 119 ransomware groups targeting industrial organizations in 2025, a 64% increase from 2024. OT cybersecurity is among the fastest-growing areas within the cybersecurity market, with global cybersecurity spending projected to reach $240 billion by 2026.
The JLR incident in August 2025 made the stakes visceral. Jaguar Land Rover suffered the UK’s most expensive cyber-attack to date, costing the economy approximately £1.9 billion ($2.5 billion). At the time of the incident, JLR had no active cyber insurance policy in place – the manufacturer had attempted but failed to finalize coverage. By contrast, Marks & Spencer, which suffered a cyber-attack in April 2025 with active coverage, filed a claim of approximately £100 million ($133 million).
The lesson for industrial CISOs: cyber insurance is no longer optional. And the cost of that insurance – or the inability to obtain it – is now a board-level financial question that Zero Trust architecture directly answers.
What Cyber Insurance Underwriters Actually Evaluate in 2026
Understanding how Zero Trust reduces premiums requires understanding what underwriters evaluate. The cyber insurance application process has transformed from a cursory questionnaire into a detailed technical assessment.
According to Marsh McLennan’s 2025 Cyber Insurance Market Report, 99% of cyber insurance applications now include specific questions about MFA implementation. Coalition’s 2024 Cyber Claims data found that 82% of denied claims involved organizations that lacked properly implemented MFA across their environment. This single statistic – 82% – drives more underwriter behavior than any other data point in the market.
The five controls that underwriters consistently evaluate, in order of impact based on available underwriting data:
- Multi-Factor Authentication (MFA). Not just “do you have MFA?” but “is MFA enforced on every account, every system, every remote access path, including vendor access and OT connections?” Partial MFA implementation – protecting email but not RDP, protecting employees but not contractors – is the most common reason for claim denial. The question is per-access-path, not per-organization.
- Endpoint Detection and Response (EDR). EDR has fully replaced traditional antivirus as the baseline expectation. Ransomware was linked to 75% of system-intrusion breaches in 2025, and most attacks rely on lateral movement that EDR is designed to detect. Underwriters want EDR on every endpoint – including networked OT devices, which most organizations exclude from EDR coverage.
- Incident Response Plan. Documented, tested, and current. Not a policy document from 2019. Underwriters increasingly require evidence of tabletop exercises and playbook testing within the last 12 months.
- Immutable, Isolated Backups. Tested restore capability with documented recovery time objectives. The question is not “do you have backups?” but “can you prove restoration works under attack conditions?”
- Documented Patch Management. Continuous, prioritized, and evidenced. The 2025 infostealer epidemic demonstrated that unpatched VPN concentrators (Citrix, Ivanti, Fortinet) were the primary initial access vector – making VPN patch management a specific underwriter focus.
Organizations that demonstrate all five controls see premiums stabilize or fall 50–60% compared to organizations without them. That percentage – documented across multiple insurance market analyses – represents the financial return on Zero Trust investment.
Why Industrial OT Environments Are Rated Higher – And What Changes the Calculus
Industrial organizations pay higher cyber insurance premiums than IT-only enterprises for specific, quantifiable reasons that underwriters articulate clearly.
Reason 1: Operational disruption costs dwarf data breach costs. When a manufacturing plant shuts down, the cost is measured in lost production per hour – typically $50,000 to $500,000 per hour depending on industry and scale. A water utility that loses SCADA control faces public safety consequences. An energy producer that loses grid management faces cascading regional impact. Underwriters price for operational disruption, not just data breach notification costs.
Reason 2: Legacy OT devices cannot run modern security controls. PLCs running Windows XP Embedded, HMIs on Windows 7, RTUs with no patch mechanism – these devices exist in every industrial network and cannot support EDR, cannot enforce MFA natively, and cannot be patched in production. Underwriters see these as uncontrolled endpoints that expand the attack surface.
Reason 3: IT/OT convergence creates lateral movement paths. The Historian server in the IDMZ connects to both IT and OT networks. The engineering workstation has both email access and PLC programming capability. The vendor VPN provides access to both the corporate network and the SCADA segment. Every convergence point is a lateral movement path that underwriters price into the premium.
Reason 4: Vendor access is poorly controlled. Third-party vendors – OEMs, system integrators, maintenance contractors – access OT systems through VPN connections with shared credentials, no per-session MFA, and no session recording. Coalition’s data confirms that over 30% of major claims involve third-party vendor incidents. For industrial organizations with dozens of OT vendors, this multiplies risk.
Reason 5: Segmentation is insufficient. VLANs separate Purdue levels but provide no east-west control within zones. CISA’s 2025 guidance explicitly stated that VLANs alone are insufficient. Underwriters who understand OT networks – and increasingly they do – ask specifically about microsegmentation and identity-based access controls within OT zones.
The Five Zero Trust Controls That Directly Reduce Industrial Premiums
Zero Trust architecture is not a single control – it is an architectural model that addresses multiple underwriter concerns simultaneously. The following five Zero Trust capabilities directly map to the controls underwriters evaluate, with specific relevance to industrial OT environments.
Control 1: Per-Session MFA Across All Access Paths – Including OT
Standard MFA protects email and corporate VPN. Per-session MFA extends authentication to every access path – including RDP to SCADA workstations, SSH to engineering servers, vendor access to OT systems, and file transfer between IT and OT zones. Each session requires fresh MFA verification. Credential theft does not translate to access.
Underwriter impact: Directly addresses the #1 claim denial reason (82% of denied claims lack MFA). Per-session MFA on OT access paths closes the gap that most industrial organizations leave open. This single control has the largest impact on premium reduction.
OT-specific consideration: MFA must integrate with smartcard infrastructure (PIV/CAC for government, corporate certificates for enterprise) and support authentication for non-domain devices – vendor laptops, legacy HMIs, and OT endpoints that cannot join Active Directory.
Control 2: Zero Inbound Firewall Ports on OT Network Boundaries
Traditional VPN concentrators and remote access gateways require inbound port 443 (or similar) exposed to the internet. Every inbound port is scannable and exploitable. The CitrixBleed pattern (CVE-2023-4966, CVE-2025-5777), Ivanti Pulse Secure vulnerabilities, and Fortinet VPN exploits demonstrated this repeatedly throughout 2024–2025.
Zero Trust Reverse Access architecture eliminates inbound ports entirely. The Access Controller inside the protected OT network initiates outbound connections to an Access Gateway. No ports are opened inbound. The OT network is architecturally invisible from the internet.
A detailed examination of how Reverse Access architecture eliminates the VPN attack surface documents the specific architectural differences that underwriters evaluate when assessing remote access infrastructure.
Underwriter impact: Eliminates the initial access vector that accounts for the majority of industrial ransomware incidents. Underwriters increasingly ask specifically about internet-facing remote access infrastructure. An architecture with zero inbound ports answers this question definitively.
Control 3: Application-Level Access Instead of Network-Level VPN
VPN provides network-level access after authentication. A user who authenticates to a VPN is “on the network” – with whatever lateral movement the network configuration permits. Zero Trust Application Access provides access to specific applications only. A user authorized for one RDP target cannot reach other systems on the network.
Underwriter impact: Directly addresses lateral movement – the mechanism that turns initial access into operational disruption. Application-level isolation contains a compromise to the specific session, not the network segment. For OT environments where lateral movement means reaching SCADA, this is the control that limits operational disruption scope – and therefore limits the claim amount.
Organizations exploring how microsegmentation and identity-based controls prevent lateral movement in OT environments can evaluate the specific segmentation architecture that underwriters increasingly require.
Control 4: Content Disarm and Reconstruction (CDR) for Cross-Network File Transfer
Firmware updates from vendors, configuration backups from Historian servers, and recipe files between MES and batch controllers all cross between IT and OT via file transfer – typically over SMB. Standard SMB provides no content inspection. Ransomware, malicious firmware, and weaponized configuration files pass through standard SMB without examination.
CDR scanning strips active content (macros, scripts, embedded objects, exploit structures) from files before they enter the protected zone. Known-bad detection is not the standard – structural analysis and content reconstruction is.
Underwriter impact: Addresses the file-based attack vector that most OT environments leave uncontrolled. For industrial organizations that transfer firmware and configuration files between networks, CDR provides documented evidence of content inspection that underwriters can evaluate.
Control 5: Unified Audit Trail with Session Recording
Fragmented logs from multiple security products create gaps that complicate both incident response and insurance claims. A unified audit trail – covering every access decision, every file operation, every interactive session – with identity attribution, device attribution, and video recording of privileged sessions provides two things simultaneously: incident response evidence for CISOs and claim documentation for insurers.
Underwriter impact: Directly addresses the “evidence problem” in claim disputes. Over 40% of cyber insurance claims are denied. Many denials involve disputes about what controls were in place and whether they were properly enforced. A unified, tamper-resistant audit trail provides the evidence that resolves these disputes in the policyholder’s favor.
The Insurance Application: How Zero Trust Answers Specific Underwriter Questions
Cyber insurance applications in 2026 include specific technical questions. The following table maps common application questions to Zero Trust architectural answers – showing CISOs exactly how to fill out the application in a way that reduces premiums.
Underwriter Question | Traditional IT/OT Answer | Zero Trust Answer | Premium Impact |
“Is MFA enforced on all remote access?” | “MFA on VPN login. No MFA on RDP to OT workstations or vendor sessions” | “Per-session MFA on every access path including OT, vendors, and file transfers” | High – directly addresses 82% denial rate |
“Are there any internet-facing ports on OT networks?” | “Port 443 open for VPN concentrator in IDMZ” | “Zero inbound ports. Reverse Access architecture – no internet-facing appliances on OT boundaries” | High – eliminates primary attack vector |
“How do you control vendor access to OT?” | “Shared VPN credentials. No session recording. No time limits” | “Named vendor accounts, per-session MFA, time-bounded access, full session recording with video” | High – addresses 30%+ of major claims |
“Do you have network segmentation in OT?” | “VLANs separate Purdue levels” | “VLANs for macro segmentation + identity-based microsegmentation within OT zones” | Medium-high – exceeds baseline requirement |
“How are files transferred between IT and OT?” | “SMB file shares with no content inspection” | “CDR-scanned file transfers through SMB Proxy with per-operation access controls” | Medium – addresses file-based attack vector |
“Do you have session recording for privileged OT access?” | “No. Separate PAM under evaluation” | “Integrated video + keystroke recording for all privileged and vendor sessions” | Medium – strengthens claim evidence |
“What is your mean time to detect OT intrusions?” | “Unknown – limited OT visibility” | “Unified audit trail with real-time SIEM integration across all access types” | Medium – demonstrates operational maturity |
“Do you have a documented, tested IR plan for OT?” | “IT IR plan exists. OT-specific plan in development” | “IR plan covers IT and OT. Tested within last 12 months. Session recordings support forensic investigation” | Medium – demonstrates preparedness |
Quantifying the Financial Return: Zero Trust ROI vs. Premium Reduction
For CISOs presenting Zero Trust investment to the board, the financial argument has two sides: the direct cost of the platform versus the premium reduction it enables.
Premium Reduction Benchmarks
Organizations implementing all five Zero Trust controls documented in this article see premiums stabilize or fall 50–60% compared to organizations without these controls. For an industrial organization paying $500,000 annually in cyber insurance premiums – a common figure for mid-market manufacturers – a 50% reduction represents $250,000 in annual savings.
Claim Denial Rate Reduction
With 40%+ of claims denied and 82% of denials linked to missing MFA, the Zero Trust controls that ensure MFA coverage across all access paths – including OT – directly reduce the probability of claim denial. For an organization with a $5 million policy, the difference between a paid and denied claim is the difference between recovery and financial crisis.
Operational Disruption Containment
The financial value extends beyond premiums. Application-level Zero Trust access contains breaches to individual sessions rather than network segments. For an industrial organization where operational disruption costs $100,000 per hour, containing a breach to a single session rather than an entire OT zone represents millions in avoided downtime.
Total Financial Impact
The combined financial impact – premium reduction + improved claim likelihood + reduced disruption scope – typically exceeds the cost of Zero Trust platform deployment within 12–18 months for industrial organizations with 200+ OT endpoints.
For industrial organizations evaluating how to consolidate cross-network security into a single Zero Trust platform, the insurance premium reduction provides an additional financial justification beyond the direct security benefits.
What Industrial CISOs Should Do Before Their Next Renewal
Cyber insurance renewal is the forcing function. The renewal application asks specific questions about specific controls. The following steps position industrial organizations for the best possible outcome at their next renewal.
Step 1: Audit MFA coverage across all access paths. Not just corporate VPN and email. Map every remote access path to OT systems – vendor connections, engineering workstation access, Historian queries, file transfers between zones. Identify paths without per-session MFA.
Step 2: Inventory internet-facing infrastructure on OT boundaries. Every VPN concentrator, remote desktop gateway, and web application exposed to the internet. Each is a potential CitrixBleed-class target and a specific underwriter concern.
Step 3: Document vendor access controls. Named accounts vs. shared credentials. Session recording vs. no recording. Time-bounded vs. unlimited access. MFA per session vs. MFA at VPN login only. This documentation directly answers underwriter questions and demonstrates control maturity.
Step 4: Evaluate Zero Trust platforms against the five controls. Not all platforms address all five. Platforms designed for IT-only environments may provide application access and MFA but lack CDR for file transfers, session recording for OT access, and zero-inbound-port architecture. A comprehensive evaluation framework for government Zero Trust platforms provides the procurement-level detail for comparing platform capabilities against insurance-relevant controls.
Step 5: Request a pre-renewal gap assessment. Work with the insurance broker to review the renewal application before submission. Map current controls to application questions. Identify gaps that can be closed before the application is filed. Every gap closed before renewal translates directly to premium reduction.
Frequently Asked Questions
How much can Zero Trust actually reduce cyber insurance premiums?
Multiple insurance market analyses document that organizations implementing comprehensive security controls – including MFA across all access paths, EDR, tested IR plans, immutable backups, and documented patch management – see premiums stabilize or fall 50–60% compared to organizations without these controls. The specific reduction depends on the organization’s risk profile, claims history, and the extent of control implementation. Zero Trust architecture addresses multiple controls simultaneously, making it the highest-impact single investment for premium reduction.
Do cyber insurers specifically ask about Zero Trust?
Increasingly, yes. Insurance applications in 2026 include questions about network segmentation, application-level access controls, vendor access governance, and continuous authentication – all of which are Zero Trust architectural principles. UpGuard’s insurance guidance specifically recommends aligning Zero Trust implementation with NIST SP 800-207 as the standard most trusted by insurers. The terminology in applications may reference specific controls rather than “Zero Trust” as a category, but the controls being evaluated are Zero Trust controls.
Why do industrial organizations pay higher cyber insurance premiums than IT-only enterprises?
Industrial organizations face additional risk factors: operational disruption costs that can reach $50,000–$500,000 per hour, legacy OT devices that cannot run modern security controls, IT/OT convergence creating lateral movement paths, poorly controlled vendor access, and insufficient network segmentation. Underwriters price these factors into premiums. Zero Trust architecture that addresses OT-specific gaps – per-session MFA on OT access, zero inbound ports on OT boundaries, CDR for file transfers – reduces the specific risk factors that drive premium increases.
What happens if a claim is denied because of missing MFA on OT systems?
Claim denial leaves the organization financially exposed to the full cost of the incident – forensic investigation, legal fees, notification costs, operational disruption, and regulatory fines. For industrial organizations, operational disruption alone can exceed $10 million for extended outages. Coalition’s 2024 data found that 82% of denied claims involved organizations without fully implemented MFA. “Fully implemented” means across all access paths – including OT. Organizations that have MFA on corporate email but not on RDP to SCADA workstations risk denial if the breach entered through the unprotected OT access path.
Should we implement Zero Trust before or after purchasing cyber insurance?
Before, if possible. The controls you implement before the application determine the premium you pay and the coverage you qualify for. Implementing Zero Trust after purchasing insurance at a higher premium means paying the higher rate until the next renewal. The optimal sequence: implement Zero Trust controls, document them with evidence, then apply for insurance with the documented controls in place. If renewal is imminent, implement the highest-impact control first (MFA across all access paths) and plan remaining controls for the following renewal cycle.
How do insurers verify that Zero Trust controls are actually in place?
Insurers use a combination of application attestation, pre-binding security assessments (often conducted by third-party assessors), and post-incident forensic investigation. The attestation is binding – misrepresentation on the application is grounds for claim denial. Insurers increasingly require evidence beyond self-attestation: configuration screenshots, audit logs, penetration test results, and third-party assessment reports. A unified audit trail from a Zero Trust platform provides continuous evidence that controls are enforced – not just configured.
Conclusion
Cyber insurance premiums for industrial organizations are driven by specific, quantifiable risk factors: uncontrolled remote access, missing MFA on OT paths, lateral movement between IT and OT, unscanned file transfers, and limited audit evidence. These are not abstract security concerns – they are the specific questions that appear on insurance applications, the specific gaps that lead to claim denials, and the specific factors that underwriters price into premiums.
Zero Trust connectivity addresses these factors architecturally. Per-session MFA closes the 82% denial gap. Zero inbound ports eliminate the initial access vector. Application-level access contains lateral movement. CDR scanning protects cross-network file transfers. Unified audit trails provide the evidence that resolves claim disputes.
The financial return is documented: 50–60% premium reduction for organizations that implement comprehensive controls. For industrial CISOs facing $500,000+ annual premiums, rising renewal costs, and board-level questions about cyber risk financial exposure, Zero Trust connectivity is not just a security investment – it is a financial strategy that pays for itself through reduced insurance costs, improved claim outcomes, and contained operational disruption.
The next renewal application will ask about these controls. The question for industrial CISOs is whether the answers improve the premium or increase it.
